BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JANUARY 25, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

FAIR WEATHER MARKS SIGNIFICANT DEPARTURE FROM YESTERDAY'S STORM....

Yesterday's storm brought extremely high temperatures to the Blue Hills 
as well as a heavy dose of rain that continues to boost totals above 
average for the month.  Yesterday's high temperature of 57 F finished 
just 3 degrees below the daily record high as fierce southerly winds propelled 
warm air into the region throughout the day.  Wind speeds were strong and sustained,
with exceptional gusts reaching up to 80 MPH.  Hourly averages were also 
significant, with an average speed of 48 MPH produced from 1 P.M. to 2 P.M..  
Yesterday's station pressure bottomed out around 5:30 P.M., with a very low 
reading reaching around 965 MB.  Since then, pressure has been largely on the rise, 
with skies reflecting this trend through an absence of cloud activity in the 
morning hours, but with some fair weather cumulus filtering in before the afternoon.


Today's Observations:

7 A.M.
Weather: Few altocumulus, few cirrocumulus
Temperature: 27F; Dew Point: 22F; Wind: W at 7 kts,
Sea-level pressure: 29.83 ins. Hg, rising steadily
Visibility: 35 miles
6-hr Max temp: 30F
6-hr Min temp: 27F
24-hr Precip: 1.41 in.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins. 
BHO SA 1155 CLR 35 103/27/22/2707/983/ FEW AC FEW CC/ 8059/ 52040 70141 10030 20027 

10 A.M.
Weather: Few cumulus 
Temperature: 32F; Dew Point: 24F; Wind: W at 15G22 kts,
Sea-level pressure: 29.86 ins. Hg, increasing, then steady
Visibility: 50 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 50 113/32/24/2715G22/986/ FEW CU/ 8100/ 51010

1 P.M.
Weather: Scattered Cumulus
Temperature: 34F; Dew Point: 16F; Wind: W at 13G22 kts,
Sea-level pressure: 29.84 ins. Hg, decreasing, then steady
Visibility: 50 miles
6-hr Max temp: 37F
6-hr Min temp: 27F
6-hr Precip: 0.00 ins.
6-hr snowfall: 0.0 ins.  
Snow depth: 0 ins.
BHO SA 1755 50 SCT 50 105/34/16/2613G22/984/ 8100/ 56008 10037 20027  

SUMMARY FOR THURSDAY, JANUARY 24, 2019 

TEMPERATURE (DEGREES F)
MAX.....57   NORMAL.....34
MIN.....31   NORMAL.....17
MEAN....44   NORMAL.....25

DEPARTURE FROM 30-YEAR NORMAL.......................+19
TOTAL DEPARTURE FOR THE MONTH.......................+35 [+1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............21   DEPARTURE........-19
TOTAL HEATING UNITS FOR THE MONTH.............914   DEPARTURE........-35
TOTAL HEATING UNITS FOR THE SEASON...........3210   DEPARTURE........-43
TOTAL HEATING UNITS LAST SEASON TO DATE..3071  DIFFERENCE.......+97

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................77 S AT  1:54 P.M.
                   AERO.........................79 S AT  1:51 P.M.
                   ASOS.........................80 S AT  1:55 P.M. 
                   DAVIS........................83 S AT 12:03 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY......................52 S AT  1:52 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................52 S AT  1:55 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................49 S AT 12:05 P.M.
AVERAGE WIND SPEED AND DIRECTION..............31.0 S
                                                     ASOS.......................28.5
                                                     DAVIS......................28.0 SSW [212 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.41  DEPARTURE.......+1.27
                         ASOS..............1.52
TOTAL PRECIPITATION FOR THE MONTH..........5.10  DEPARTURE.......+1.70
                         ASOS..............5.25
TOTAL PRECIPITATION FOR THE YEAR...........5.10  DEPARTURE.......+1.70
                         ASOS..............5.25

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.6
TOTAL SNOWFALL FOR THE MONTH................4.2  DEPARTURE........-9.1
TOTAL SNOWFALL FOR THE SEASON..............11.9  DEPARTURE.......-17.4

PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
M:    Missing data

01/01 54/29/42/+15/..../0.0/386/72      53 W   AERO 53 W   RMY 54
01/02 34/24/29/+2/..../.../432/81          22 NW  AERO 22 NW  RMY N/A
01/03 42/28/35/+9/0.01/T/228/43        28 WNW AERO 30 WNW RMY 30
01/04 43/30/37/+11/..../.../354/66         29 SW  AERO 29 SW  RMY 29
01/05 41/32/37/+11/1.19/000/000/00  26 NE  AERO 25 NNW RMY 27
01/06 42/21/32/+6/0.00/0.0/300/56     42 NW  AERO 46 NW  RMY 50
01/07 26/14/20/-6/.../.../474/88            37 NW  AERO 41 NW  RMY N/A
01/08 40/24/32/+6/.../.../000/00           24 SSE AERO 23 SSE RMY N/A
01/09 42/31/37/+11/.../.../.../..              44 W   AERO 46 WNW RMY 45
01/10 32/20/26/+1/T/T/.../..                  37 NW  AERO 41 NW  RMY 43
01/11 26/12/19/-6/0.00/0.0/.../..           36 WNW AERO 37 WNW RMY 38
01/12 26/9/18/-7/0.00/0.0/.../..             32 NW  AERO 32 NW  RMY 29
01/13 25/11/18/-7/0.00/0.0/.../..           18 NNW AERO 16 NW  RMY N/A
01/14 27/20/24/-1/0.00/0.0/.../..           20 NNE AERO 17 N   RMY N/A
01/15 34/18/26/1/0.00/0.0/.../..            22 NW  AERO 21 NNW RMY N/A
01/16 34/23/29/+4/0.00/0.0/.../..          33 W   AERO 32 W   RMY 35
01/17 27/13/20/-5/0.00/0.0/.../..           30 NNW AERO 28 NW  RMY N/A
01/18 40/21/31/+6/0.00/0.0/.../..          18 WNW AERO 18 WNW RMY N/A 
01/19 31/24/28/+3/.../1.6/.../..              30 E   AERO 30 E   RMY N/A
01/20 33/3/18/-7/.../.../.../..                   39 ENE AERO 43 ENE RMY 39
01/21 3/-2/1/-24/0.00/0.0/.../..              32*WNW AERO 41 WNW RMY M
01/22 24/0/12/-13/0.00/0.0/.../..           28 NW  AERO 30 NW  RMY 29
01/23 46/15/31/+6/0.00/0.0/.../..          37 SSW AERO 39 SSW RMY N/A
01/24 57/31/44/+19/1.44/0.0/.../..        77 S   AERO 79 S   RMY N/A

01/25 Low temp since midnight is 27F; normal low is 17F


DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JANUARY 25
HIGH 56F IN 2010
LOW -10F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972

RECORDS FOR JANUARY 26
HIGH 68F IN 1950 [RECORD FOR MONTH]
LOW -5F IN 1920
PRECIP 1.60 INS. IN 1958
SNOW 9.0 INS. IN 1898
WIND 90e MPH SE IN 1978

TODAY'S REPORT PREPARED BY: Nate Iannuccillo